{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:LKRPZSRZKJXWNIL6ZLC6FCMYVP","short_pith_number":"pith:LKRPZSRZ","schema_version":"1.0","canonical_sha256":"5aa2fcca39526f66a17ecac5e28998abd11e69ec16213f6d566a63b104a8fbe4","source":{"kind":"arxiv","id":"1504.03428","version":2},"attestation_state":"computed","paper":{"title":"Testing the isotropy of the Universe by using the JLA compilation of type-Ia supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Hai-Nan Lin, Sai Wang, Xin Li, Zhe Chang","submitted_at":"2015-04-14T06:16:28Z","abstract_excerpt":"We probe the possible anisotropy of the Universe by using the JLA compilation of type-Ia supernovae. We apply the Markov Chain Monte Carlo (MCMC) method to constrain the amplitude and direction of anisotropy in three cosmological models. For the dipole-modulated $\\Lambda$CDM model, the anisotropic amplitude is consistent with zero at $68\\%$ C.L., and has an upper bound $A_D<1.98\\times10^{-3}$ at $95\\%$ C.L. Regardless of much larger uncertainty, we find the dipole direction of JLA is amazingly opposite to that of Union2. Similar results are found for the dipole-modulated $w$CDM and CPL models."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1504.03428","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-14T06:16:28Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"1ec7c1035aa1a5cb332fca51a8ccf692258b70856858a0c099f5971b0acbb23a","abstract_canon_sha256":"377f2c5ef8b72e02983f31609e8db78ac8ee5a7f29fec78dca9de85fc8bced55"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:45.007418Z","signature_b64":"uWwYMSDzc8tSNw3htpYjq3DhE+MbjPd1K4/C+mNERL176hw6hHhIxOIKyr5GWKwmAmm5qCG5pg1xeYNbhKfaDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5aa2fcca39526f66a17ecac5e28998abd11e69ec16213f6d566a63b104a8fbe4","last_reissued_at":"2026-05-18T01:21:45.006923Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:45.006923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Testing the isotropy of the Universe by using the JLA compilation of type-Ia supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Hai-Nan Lin, Sai Wang, Xin Li, Zhe Chang","submitted_at":"2015-04-14T06:16:28Z","abstract_excerpt":"We probe the possible anisotropy of the Universe by using the JLA compilation of type-Ia supernovae. We apply the Markov Chain Monte Carlo (MCMC) method to constrain the amplitude and direction of anisotropy in three cosmological models. For the dipole-modulated $\\Lambda$CDM model, the anisotropic amplitude is consistent with zero at $68\\%$ C.L., and has an upper bound $A_D<1.98\\times10^{-3}$ at $95\\%$ C.L. Regardless of much larger uncertainty, we find the dipole direction of JLA is amazingly opposite to that of Union2. Similar results are found for the dipole-modulated $w$CDM and CPL models."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.03428","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1504.03428","created_at":"2026-05-18T01:21:45.007006+00:00"},{"alias_kind":"arxiv_version","alias_value":"1504.03428v2","created_at":"2026-05-18T01:21:45.007006+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.03428","created_at":"2026-05-18T01:21:45.007006+00:00"},{"alias_kind":"pith_short_12","alias_value":"LKRPZSRZKJXW","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_16","alias_value":"LKRPZSRZKJXWNIL6","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_8","alias_value":"LKRPZSRZ","created_at":"2026-05-18T12:29:29.992203+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP","json":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP.json","graph_json":"https://pith.science/api/pith-number/LKRPZSRZKJXWNIL6ZLC6FCMYVP/graph.json","events_json":"https://pith.science/api/pith-number/LKRPZSRZKJXWNIL6ZLC6FCMYVP/events.json","paper":"https://pith.science/paper/LKRPZSRZ"},"agent_actions":{"view_html":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP","download_json":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP.json","view_paper":"https://pith.science/paper/LKRPZSRZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1504.03428&json=true","fetch_graph":"https://pith.science/api/pith-number/LKRPZSRZKJXWNIL6ZLC6FCMYVP/graph.json","fetch_events":"https://pith.science/api/pith-number/LKRPZSRZKJXWNIL6ZLC6FCMYVP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP/action/storage_attestation","attest_author":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP/action/author_attestation","sign_citation":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP/action/citation_signature","submit_replication":"https://pith.science/pith/LKRPZSRZKJXWNIL6ZLC6FCMYVP/action/replication_record"}},"created_at":"2026-05-18T01:21:45.007006+00:00","updated_at":"2026-05-18T01:21:45.007006+00:00"}